Electrically-heated tool.



No. 767,777. 7 PATENTED AUG. 16, 1904, T. VAN ALLER. ELEGTRIOALLY HEATED TOOL.

APPLIOATION FILED DEO.14, 1903.

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' T. VAN ALLER. ELEGTRIGALLY HEATED TOOL.

APPLICATION FILED DEC. 14, 1903.

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inventor Tycho Van fH ler UNITED STATES ERAL ELECTRIC Patented August 16, 1904.

PATENT OEETCE.

TYOHO VAN ALLER, OF SOHENEOTADY, NEIV YORK, ASSIGNOR- TO GEN- OOMPANY, A CORPORATION OF NEW YORK.

ELECTFilCALLY-HEATED TOOL.

SPECIFICATION forming part of Letters Patent N 0. 767,777, dated August 16, 1904.

Application filed December 14, 1903. Serial. No. 185,026. (No model.)

To (all 1071/0717, it may concern:

Be it known that I, TYOHO VAN ALLER, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful Improvements in Electrically- Heated Tools, of which the following is a specification.

The present invention relates to electricallyheated tools, and more particularly to that class of tools such as soldering-bars, smoothing-irons, and other hand-tools the operation of which is more or less intermittent.

The object of my invention is to provide a tool of this character which when released by the operator will automatically reverse, so as to bring its operative face uppermost into position to receive the effect of the rising heat while at rest.

A further object is to provide an improved tool of strong and durable construction which may be cheaply manufactured and easily connected up and taken apart.

In carrying out my invention I provide an elastic suspender which may be attached to a support over the workmans bench and connect to the lower ends thereof an electricallyheated tool pivoted about an axis below its center of gravity, so that when released from the hand of the workman it is drawn up above the work and rotates into inverted position. The tool consists of a core of solid metal, about which strips of asbestos or other heatresisting insulation and resistance-wire are wrapped in the usual manner. One edge of the core projects through a grid forming the lower end of an inclosing casing, and the other edge is rigidly secured to a transverse division-plate provided with binding-posts for the electrical connections and secured to the sides of the casing by the screws which secure the upper end plate in place. The electrical conductors are led through the upper space within the casing between the transverse plate and the upper end plate to the bindingposts, and in case access thereto is desired it is only necessary to remove the screws holding the upper end plate in position. The upper plate has two sets of lugs or projections at its ends. One set of lugs is bent up to receive a handle,

while the other set is bent down beyond the longitudinal axis of the tool and pivotally connected to the lower ends of the elastic suspender. The handle is made with one or more longitudinal projections adapted to engage the suspender and prevent successive rotations of the tool on its pivoted axis to thereby protect the electrical feed-wires from becoming unduly twisted.

For a more complete understanding of the invention reference may be had to the following detailed description and the accompanying drawings, forming a part of this specification, in which Figure 1 shows in inverted side elevation a smoothing-iron such'as is used by armaturewinders embodying one form of my invention. Fig. 2 is an end elevation'thereof in operative position. Fig. 3 is a side elevation of the iron and its elastic suspender. Fig. 4 is a vertical cross-section of the smoothingiron. Fig. 5 is a top plan of the transverse plate and binding-posts, and Fig. 6 is a side elevation of the core with the heating-coil and retaining-plate in position.

The core 1 consists of a relatively thin bar of copper secured at one edge by screws 2 to a transverse supporting-plate 3 and is provided at its ends with strips of asbestos paper 4: and at intermediate points with strips 5. About these strips a layer of spaced iron wire 6 is wound. Then a second set of paper strips 4 and 5 are placed outside of the former and a second layer of wire wound thereon, and so on for a number of courses, as shown in Fig. 4c. The ends of the wire 6 are respectively connected to the lower ends of binding-posts 7 and 8, extending through the supportingplate 3 and insulated therefrom. The lower quarter of the core 1 is left uncovered and the end of the coil inclosed by a layer of asbestos 9 and a supporting-grid 10. Around the outside of the coil a piece of asbestos ll is wrapped and the whole inserted in a short metal casing 12, having its lower edge turned inwardly to form a shoulder 13, which is adapted to receive and support the grid 10 at its outer edge with the coresu1i)porting plate 3 some distance below the upper edge of the casing 12. The supporting-plate has integral lugs 14L, which are bent up at right angles thereto, with their outer faces slightly within the perimeter of the supporting-plate, and each lug 14 is centrally pierced and tapped. The end of the casing 12 is recessed in its upper edge at 15 to permit the electric leadwires 16 to be passed therethrough to the binding-posts 7 and 8.

The upper end of the casing 12 is closed by a cover-plate 17, having webs 18 bent downwardly from opposite sides to enter between the casing 12 and lugs 14: and apertured in alinement with holes in the casing and the lugs for the reception of screws 19, by means of which the said parts are secured in position. The ends of the cover-plate 17 are slightly tapered and bent upwardly and backwardly to form supports 20 21 for the handle 22, and near the points of bending the plate has riveted thereto lugs or brackets 23 and 2 L, bent downwardly over the ends of the casing to near its lower end. These lugs or brackets are pierced on a line below the center of gravity of the tool, and one lug, 24, is connected by a simple pivot-pin 25 to a short metal terminal 26, while the other lug, 23, is connected to a second terminal 27 by a pivotal bushing 28, through which the conductor-wires 16 are passed, and the inside of the lug 23 is provided with a clip 29, which serves to hold the portion of the feed-wires 16 between the bushing and. the recess 18 in the casing up against the surface of the lug and from becoming displaced.

The elastic Suspender consists of two helical springs 30 and 31, carrying at their lower ends the supporting-terminals 26 and 27 and connected at their upper ends to a horizontal bar 32, provided with a central attaching-hook 33, by means of which the device may be suspended from any overload-support. The terminals 26 and 27 consist of metal punchings bent at one end into cylinders of a size to enter the ends of the helical springs for some distance, and terminal 27 has secured in the hollow of the cylindrical end a plug 34, through which the lead-wires 16 are tightly drawn and passed up through the interior of the spring 30.

The handle 22 is extended longitudinally to form stop projections 35, which are adapted to engage the springs 30 and 31, as shown in Fig. 2, to prevent successive rotations of the tool on its pivotal axis.

I do not desire to restrict myself to the particular form or arrangement of parts herein described and shown, since it is apparent that they may be changed and modified without departing from my invention.

l/Vhat I claim as new, and desire to secure by Letters Patent of the United States, is-

1. The combination of an electrically-heated tool, means for supporting said tool, and means for automatically inverting said tool when disengaged from the hand of the operator.

2. The combination of an electrically-heated tool, means for elastically supporting said tool, and means for inverting said tool when disengaged from the hand of the operator.

3. The combination of an electrically-heated tool and supporting means pivotally connected thereto below the center of gravity of said tool.

4:. The combination of an electrically-heated tool, and elastic supporting means pivotally connected thereto below the center of gravity of said tool.

5. The combination of an electrically-heated tool having arms extending from its top surface over in front of its ends, and an elastic suspender having two supporting-terminals pivotally connected to said arms below the center of gravity of said tool.

6. The combination of an elastic suspender having a terminal provided with a centrallyapertured pivot, and an electrically-heated tool secured to said pivot below the center of gravity of said tool.

7. The combination of an elastic suspender having a terminal provided with a centrallyapertured pivot and means for retaining an elastic conductor in place thereon, and an electrically-heated tool connected to said pivot below the center of gravity of said tool.

8. The combination of an electrically-heated tool, an elastic suspender pivotally connected thereto below the center'of gravity of said tool, and means to prevent successive rotations of said tool upon its pivotal axis.

9. In an electrically-heated tool, the combination with a core and its heating-coil, of an inclosing casing therefor, a transverse supporting-plate for said core provided with binding-posts and secured within said casing, and a cover detachably secured to the upper end of said casing.

10. In an electrically-heated tool, the combination with a core and its heating-coil. of an inclosing casing therefor, a transverse supporting-plate for said core provided with binding-posts and located within said casing, a cover for the upper end of said casing, and cletachable devices engaging said cover, casing and plate and securing them in fixed relation.

In witness whereof I have hereunto set my hand this 12th day of December, 1903.

TYCHO VAN ALLER.

Witnesses:

BENJAMIN B. HULL, HELEN ORFORD. 

